POROUS WATER-ABSORBING GEL COMPOSITION HAVING SENSITIVITY TO TEMPERATURE AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP3645548
PROBLEM TO BE SOLVED: To provide a porous water-absorbing gel composition having sensitivity to temperature, used for dehydration, etc., of slightly dehydrating slurry discharged from sewage-treatment plants, food-related plants, etc. and to provide a method for producing the gel composition.
SOLUTION: When a catalyst is added to an aqueous solution containing an N-alkylacrylamide, a crosslinking agent and a promoter in a nitrogen atmosphere at ≥35°C and these components are stirred and casting of the mixture and crosslinking of N-alkylacrylamide are simultaneously carried out, N-vinylpyrrolidone is used as a copolymer component.
February 10, 2005
January 06, 2003
NISHIKAWA RUBBER CO LTD
C08F220/56; C08F226/10; C08F220/00; C08F226/00; (IPC1-7): C08F220/56; C08F226/10